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Finding the Fourth Proportional to 429,383.94, 644,075.36 and 163,080.78

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Solution

The fourth proportional to 429,383.94, 644,075.36 and 163,080.78 is: 244,620.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,383.94 : 644,075.36 = 163,080.78 : x
  2. Step 2: Convert to fraction form
    429,383.94/644,075.36 = 163,080.78/x
  3. Step 3: Cross multiply
    429,383.94x = 644,075.36 × 163,080.78
  4. Step 4: Simplify right side
    429,383.94x = 105,036,312,087.58
  5. Step 5: Solve for x
    x = 105,036,312,087.58/429,383.94
  6. Step 6: Final answer
    x = 244,620.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.